Pipe-cutting machine



Dec. 30, 1952 s. G. MARlNovlcH 2,523,285

PIPE-CUTTING MACHINE Filed DEC. l, 1951 2 SHEETS-SHEET 2 Zsnnentor Z3.54M 6. MAMA/@waff Clttorneg Patented Dec. 30, 1952 STATES Par ENToF/'FICE PIPE-CUTTING'MACHINE G. Marinaden. Los Au'g1es,""ciif.

fApplieaamri)@gember 1, 1951-;` stimme. 25u68 (criss-'21 I 7 Claims.

Y 1 I This/invention i relates to` a,-'rrxachinef for cutting pipesWherethey areto-be joined ori-intersected by otherp-ipes. Where the end`'of fone pipe joins an -V intermediate-part of another pipe, said fendvof the -iirst pipe rmustbe-cutso as to fit the-curvature 1' =of thesecond 1 pipe,V and saidl second pipe must beprovided-vwith `a holecon-forming in its contour to the contour of the end of the`iirst pipe.Thus, the two; pipes maybe interttedand then joined in `any fof theusual-mannersv as by welding orisoldering alongv the joint or seam.

`-Two such joined-pipes ma-ybe of the same diameter or -diierent`diameters; i they may join i o1' intersect squarely with their axes inthe same planeeandlat yright-angles; vthey may intersect squarely withtheiraxes offset relativelyand at rightangles; theymay intersect withtheir axes coplanar andat` an angleA other than a right ang-le;or theymay intersect with their axes relatively oiset and at anangle other than`a right angle. i Thus, regardless roi the relative Asizes of theirdia-meters, two pipes-may intersect inthe above-mentioned four differentways.

V4Heretefora expensivemachines, requiring interchangeable parts andcams, were Aneeded to enable cutting of pipes intersecting insaid fourdifferent ways. The lpresent invention contemplates, andlit isany Objectthereof, to provide a pipe-cutting machine embodying afsingle templetmember that requires only `setting in operative position-to make ranyVdesired cut in -a pipe-thereby obviating-vthe need-for providing a.-plurality cient-.guidingcams-and i the `attending need for selectingand-f installing the `proper templet` for -a particular cut.

`Itis `a more-specific object of the invention to provide-a.singlewtemplet offthezchar-acter 'referredlto andlto provide simplemeans for effecting .ready adjustment of the position fofhsaid templet`tolcontrol -the path'foi movement of a cuttingtool lor device "or ayscriberg-"as the case maybe. y

ATheliriveriti'onY "alsoA has for its objects `t0' provide -such meansthat are positive in operation, convenienti-in usa-easily `installed inaworking position and easily disconnected therefrom, economical of"manufacture, relatively simple, *and of general superiority -"and"serviceability.

Theinvention also comprisesinovell details 'of construction andV novel'combinationsand -arrangements offparts, whichfwill morelfully appear in'thel course of the ufollowing description. However`,`the drawings merelyshow and the following description merely describes embodiments ofi'thepresent'invention, which are given by way of `ills`trationor` eiampleonly.

"In' "the drawings, like reference characters designate' similarparts inthe several views.

"Fie 1 isV s plan view; partly broken away, 'ef .a

2 pipelcutting machine f'acco'rding to fthe present invention.

`allig.` :2 fis al side elevational 3view-thereof; ipartly brokenaway.

Fig 3 vis a `fragr'nentary vertical"fsectionalview of the.cut-controlling templ'et and" adjustment means in one position ofadjustment-thereof.

Fig. 4 isla' side view of two rinters'ectin'gcpipes showingnthe Vformofthe-fcutobtained bybthe templetf position of.. Fig.` `3.

Figr is a fragmentary vertical:sectionalwiew or" the cut-controlling.templet `andi"adjustment means in "another position ofY-aol'justment,ithe same being" taken at right :anglesfto "Fig,` 13.

Fig.l 6` is :an end viewof twointersectingzfpipes showing the form ofthe cut obtained zby'ithe templet-position `of :Fig.-3.

Fig. V7 fis a vview similartoligr-l showing two intersecting: `pipes inwhich the axes of said-pipes are both' non-coplanar and atanr ang1e to`each other of less than190.

cFig. 8 shows end 'viewlof the intersecting'pipes shown in Figsre, 6-and- 7 `together With-lines showing the preparatory 'measurements thatare made to `determinethesettingaof the out-controlling templet.

Fig. 9fis across-sectional- View ofV a -la-t-oam to replace the templetshown `in Figs. l, 2,-3 and 5 and for cutting miterseandbevelsonfthefends ofppes. I

Figs. l0 and l1 are side views of pipes having ends as `cut underlcontrol `of the `2 templetY shown in Fig. 9.

pipe-cuttingmaehine that .i is illustrated comprises,`generally,-aixedbase A|5,a :vertical adjustablepost i6 carriedqby-.saidbase, af head Il carried Ibysaid post and extending horizontally abovebase I,5,-a verticallymovable-spindle I8 carried -by-head 1.1,! means I9-lto rotate said spindle, a .cut-controlling templet-Z` concentric with`the spindle, .adjusting means 2| `mounting templet-2 on head1?,`atracer-22 carried by the spindle and operatively engaged with the-tenplet to -controlthe rise andffall ofi-said` spindle, andpipe-cutting means V`23-or the like` carried .by the spindle and movabletherewith `as' contrblledmby said templet and. tracer.

`r.The base |5-1- is shown-astahorizontal frame having spaced legs'24v(one of- Whicnisfsho'wn in Fig. land4 the other in Fig. i12) :connectedby f a member'25. ln thepresent case; an upsta'nding bracket 25 isprovided :at'the middle ofmember-25. Said frame is shown withsupportimembers 2l-Mon each'leg Zat-for` a Yl'iorizo'l'ltallyr Qdisposedpipe 28. These members areto Vbewccfnsidi ered as exemplary'sinceanysuitable meansmay be provided for supporting ,piper 28A or a verticallydisposed pipe 29,as the'case maybef'n fact, -insteadi ofA base -fl 5S-supporting a `fpipef-lin working` position-pin -cases i where thefpipe: is unduly large, the base may be mounted on the pipe as can beunderstood. In any case, provision is made to xedly position a piperelative to the pipe-cutting means 23.

Post I6 is preferably adjustable for length to provide verticaladjustment for head I1 and the means c-arried thereby in accordance withthe diameter or height size of pipe 28 or 29. As shown, said postcomprises a vertical tube 29 carried on a pivot 30 on bracket 26, atelescopic tube 3| within tube 29, means to adjust tube 3| relative totube 29 as suggested by adjusting knob 32, and means to hold said tubesrelatively non-rotational and, in this case, comprising a rod or tube 33carried by tube 3| and a guide bracket 34 carried by tube 29 and inwhich rod or tube 33 is guided. While the same has not been illustrated,it will be clear that pinion-and-rack, or similar adjusting meanscontrolled by knob 32, may be provided within tubes 29 and 3| to enablelength adjustment of post I6. Pivot 39 enables the post to be tilted ifsuch is desired.

Head I1 is shown as a horizontally extending tube 35 affixed to tube 3|and a bracket 36 carried by the outer end of tube 35 and abovepipesupporting members 21. Bracket 36 may be formed in diierent ways,but essentially includes upper and lower aligned guide bearings 31 and38, respectively, for spindle |8 and horizontally spaced supports 39 and46 for templet-adjusting means 2|.

Means i9 is shown as a handle 4| on one end of a shaft 42 extendingthrough tube 35, a bevel pinion 43 on the other end of said shaft, abevel gear 44 in mesh with said pinion and having a sleeve extension 45between bearing 38 and spindle I8, one or more upstanding pins 46carried by gear 44, and an apertured flange 41 affixed to the spindleand through the apertures of which said pins 46 extend. The structurethus provided rotates spindle I8 and enables vertical movement of saidspindle. The coupling provided by pins 46 and ilange 41 serves as asliding key means enabling vertical movement of the spindle while thesame is being rotated by handle 4|.

An important element of the present machine is the templet 25. The samecomprises a circular plate that is formed as a segment of a cylinder.The cylindrical form is best seen in Fig. 1, while Figs. 2, 3 and 5 showthe arcuate form thereof. A central opening 46 is provided in saidtemplet to clear spindle |6 which passes therethrough. In the presentinstance, said templet is shown with its convex surface facing upwardly,said surface being the one engaged by tracer 22. However, the templetmay be reversed so that its concave surface is uppermost and engaged bythe tracer. In any case, the arcuate curvature of said templet willcause tracer 22 to rise and fall as the same describes a circular patharound the axis of spindle I8. The degree of curvature of the templet isnot material except that the distance between the high point along line49 and the low point 50 at the periphery at opposite sides, should be ofsunicient magnitude to provide a desired rise and fall movement of thetracer. I

Templet-adjusting means 2| is here shown as two concentric rings and 52mounted on transversely arranged pivots 53 and 54, respectively. Theouter ring 5| is adjustable on axis 53 and inner ring 52 (to which c-am20 is aixed) is ad justable on axis 54. Ring 5| is carried by bracketsupports 39 and 46 and ring 52 is carried by ring 5|. Thus, both ringsand templet 20 can be adjusted together on axis 53; ring 52 and tem'-Aplet 20 together can be adjusted on transverse axis 54; and ring 5| canbe adjusted on axis 53 and ring 52 and the templet on axis 52.

There are four positions of adjustment of templet 20: the symmetricalposition of Fig. 2, the position of Fig. 3 in which the templet is swungon axis 54, the position of Fig. 5 in which the templet is swung on axis53, and the compound position (not shown) in which the templet is swungon both said axes. The degree of tilt o1' swing of the templet may bedetermined by scale means 55 and 56 provided for the respective axes 53and 54.

Tracer 22 comprises a tracer wheel 51 or the like carried by a post 58mounted on the end of a bar 59 adjustably engaged in a guide block 60 onthe upper end of spindle I8. Graduations 6| on said bar may be used todetermine the distance of tracer wheel 51 from the center or axis ofspindle I8, the same being the center of templet 26 and also the centerof intersection of axes 53 and 54.

Pipe-cutting means 23 is shown as a torch 62 on a tilt-adjustable pivot63 provided on a vertically adjustable member 64, a verticallyadjustable itting 65 mounted on the lower end of spindle I8, ahorizontally adjustable threaded bar 66 in tting 65, Aand a guide block61 on the end of said bar and adjustable mounting member` 64. Bar 66 isthreaded as shown and is slidable in litting 65, nuts 68 on said barlock the same in adjusted position in fitting 65. A roughverticaladjustment for torch 62 is afforded by the fitting 65 and a nervertical adjustment is made between member 64 and block 61. It will beclear that torch 62 describes exactly the same path as does tracer 22,both rotationally and vertically. However, the size of the circular pathmay be greater or smaller according to the adjustment of the torchrelative to the axis of spindle I8. Also, pivot 63 allows adjustment ofthe torch so that it cuts at an angle into pipes 28 or 29 to provide awelding bevel, if the same is desired.

Torch 62 merely exemplies any suitable cutting or marking tool since themachine may not only cut pipes but may mark a templet sheet or modelarranged in the round shape of a pipe and then opened at for layout orother uses.

The adjustment of templet 20 is determined as indicated in Fig. 8wherein two pipes 23 and 2S, which are to be cut, for mutualintersection or joining, are shown. Said pipes are shown as different indiameter but they may be the same size. If different, the diameter 69 ofthe smaller pipe 28 is measured and, with a graduated straight edge,said diameter is located at 16' on the other pipe so as to subtend arc1|. Thus, diameter 69 and line 10 are equal. is measured. From apreviously prepared table in which successive radial increments oftemplet 20 are related to the successively increasingfrise,

distances of said templet along said increments.,

the radial distance that is related to the distance oi rise A12 is read.Tracer 22 is then set at'said radial distance from the center of spindle|8.

' If the axes of pipes 28 and 29 intersect at right angles and arecoplanar, both rings 5| and 52 are set at zero on scale means 55Vand 56,i. e., both. horizontal, templet 20 thereby having the symmetricalposition of Fig. 2. If the hole in pipe 26I is to be cut, torch 62 isadjusted to cut a circular hole in said pipe of the size of pipe 29and,` if 'the end of pipe 291s to be cut, torch 62 is adjusted'yaccordingly as shown'by vthe dot-dash lines or Now the rise 12 of arc1|- Fig. 2. Now, handle 4| is slowly turned and the cut is made in onerevolution of spindle i8.

If the axes of pipes 28 and 29 intersect at an angle other than a rightangle as in Fig. 4, said angle of intersection being known, templet 2tis adjusted to said angle on axis 54, as in Fig. 3. Now, the rise isgreater on one side of line 49 and substantially smaller on the oppositeside. The resultant cut that is made in the end of pipe 29 is shown at13 in Fig. 4. In order to obtain the same cut in pipe 28, the same ismounted on base l in a plane transverse to that shown in Fig. 2 and atthe angle of intersection. This position is shown at 28a.

If the axes of the pipes are at right angles but oiset as in Fig. `6,templet is tilted on axis 53 to the angle of offset as in Fig. 5. Theout is made in pipe 29 in the vertical position shown in Fig. 2. Thesame cut is made in pipe 28 by arranging the same horizontally in theposition of 28h of Fig. 8 but oiset from the center of spindle i8according to the offset of the pipe axes.

From the foregoing it will be clear that the fourth condition of pipeaxes intersection is achieved by adjusting the templet on both axes 53and 54, cutting pipe 29 in its upright position, and cutting pipe 28 inboth the angular position of 28a and the offset position of 28h.

The bevels 'i4 of Figs. 10 and 11 are made to any desired angle byreplacing templet 2l) and its surrounding ring 52 with the at templet 15and ring 52 of Fig. 9. By means of this templet 15, bevels at anydesired relative angle can be made by adjustment of said templet on axes53 and 54 as before described.

While the invention that has been illustrated and described is nowregarded as the preferred embodiments, the constructions are, of course,subject to modifications without departing from the spirit and scope ofthe invention. It is therefore not desired to restrict the invention tothe particular forms of construction illustrated and described, but tocover all modications that may fall within the scope of the appendedclaims.

Having thus described the invention, what is claimed and desired to besecured by Letters Patent is:

1. A machine of the character described comprising a spindle guided forendWise movement and means to rotate said spindle, a generally circulartemplet having its center on the axis of said spindle, an adjustablemount for the templet and embodying two concentric rings adjustable onaxes that are at right angles to each other and in a plane transverse tothe spindle axis, an adjustable tracer carried by the spindle and inoperative engagement with a face of said templet to describe a circularpath during rotation of the spindle, and a tool adjustably carried bythe spindle and having a path of travel conforming to the path of travelof the tracer.

2. A machine according to claim 1: the face of the templet engaged bythe tracer being arcuate and the spindle being moved endwise as saidtracer follows the curvature of said face to move the tool accordingly.

3. A machine according to claim 1: a fixed axial mount for the outerring, and the axis of the inner ring being carried by the outer ring.

4. In a machine of the character described, having a spindle mounted forboth endwise and rotational movement and mounting a tool, a generallycircular templet having its center on the axis of the spindle, anadjustable mount for the templet and embodying two concentric rings ad-0 Number justable on axes that are at right angles to each other and ina plane transverse to the spindle axis, and an adjustable tracer carriedby the spindle and in operative engagement with a face of said templet.

5. In a machine of the character described. having a spindle mounted forboth endwise and rotational movement and mounting a tool, a generallycircular templet having its center on the axis of the spindle, anadjustable mount for the templet and embodying two concentric ringsadjustable on axes that are at right angles to each other and in a planetransverse to the spindle axis, and an adjustable tracer carried by thespindle and in operative engagement with a face of said templet, saidface of the templet being arcuate.

6. A pipe-cutting machine comprising a base to engage a pipe to be out,a post extending from said base, a head on the upper end of the post andincluding a bracket having vertically aligned bearings, a spindlemounted to slide in said bearings, means extending through the head torotate the spindle, a templet having a central hole through which thespindle extends, an adjustable tracer on the spindle in operativeengagement with the templet, an adjustable mount for the templet foradjusting the same on two axes at right angles to each other, said axesbeing in a plane transverse to the axis of the spindle, said mountcomprising an inner ring iixedly connected to and surrounding thetemplet, a concentric ring around the inner ring and carrying the axisof said inner ring, and a xed support for the axis of the outer ring,and a pipe-cutting tool on the spindle and movable in a path similar tothe path of movement of the tracer during rotation of the spindle.

7. A pipe-cutting machine comprising a base to engage a pipe to be cut,a post extending from said base, a head on the upper end of the post andincluding a bracket having vertically aligned bearings, a spindlemounted to slide in said bearings, means extending through the head tor0- tate the spindle, a templet having a central hole through which thespindle extends, an adjustable tracer on the spindle in operativeengagement with the templet, said templet having an arcuate face andsaid tracer being engaged with said face, an adjustable mount for thetemplet for adjusting the same on two axes at right angles to eachother, said axes being in a plane transverse to the axis of the spindle.said mount comprising an inner ring fixedly connected to and surroundingthe templet, a concentric ring around the inner ring and carrying theaxis of said inner ring. and a fixed support for the axis of the outerring, and a pipe-cutting tool on the spindle and movable in a pathsimilar to the path of movement of the tracer during rotation of thespindle.

SAM G. MARmovIcH.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Name Date Carrier et al. Oct.. 6, 1931 DouglassMay 10, 1932 Matson Oct. 21, 1947 Hatten Mar, 2, 1948

